Thanks, Bill. I admit that I failed with the instructions I was given earlier, further proving that my username is for real. A Mac lady came over to help me, grousing loudly about the app-specific password. But she forged ahead and managed somehow to use the Apple mail app to send FastMail. It’s all magic to me, it it’s working.

I really wanted to be able to do it myself. I showed the instructions I had at the time to the tech lady. She seemed really opposed to using FastMail, but I wouldn’t budge. I think she made it harder that in had to be. I have an iMac computer now, and she’s coming back to set FM up on it. I think that should be easier, although she was saying she’d have to use the app-specific password again. I don’t understand why I would have t use an app on a full-blown computer. I had FM on my Asus PC, and it wasn’t an app...

You certainly figured me out quickly, Fred. I am easily confused by tech lingo, and indeed I did think "app" was for a phone/tablet, not a "computer." I am 71 and not naturally gifted in anything tech. So thank you for the clarification. I think I can proceed now without the FM-averse Mac lady.